The ITCZ Drives Our Warming trend NOT CO2ppm! Climitards argue the world had been in a Holocene cooling trend, but now a warming trend has reversed that cooling. So mindlessly they blame rising CO2. Climitards ignore how the ITCZ (InterTropical Convergence Zone) has shifted during the last 12,000 years, and that the ITCZ shifts correlate perfectly with changing global temperatures, unlike the CO2 concentration mismatches during the Holocene. The ITCZ moves north and south depending on the location of the earth’s median temperature (energy flux). The ITCZ drives the earth’s most important circulation pattern, the Hadley Circulation. As the ITCZ shifts, it changes the pattern of tropical rainfall, but also the location of warm & dry weather patterns associated with the linked high-pressure systems. By affecting atmospheric and ocean circulation and the transport of heat, the ITCZ shifts are also associated with shifts in the earth’s global temperature. As seen in graphic A, the ITCZ shifts with seasonal solar heating of the hemispheres, causing a rainy season in the northern tropics summer and a dry season in the southern tropics. It then reverses in our winter. In addition, the ITCZ shifts in accord with orbital changes that oscillate over 26,000-year periods (precession cycle), and 41,000 period (obliquity cycle). As seen in graphic B, when the summer ITCZ position (red line) was farthest south, the world was in a cold glacial period. As the ITCZ migrated northward, the earth entered the Holocene Warm period associated with greater inflows of warm water into the Arctic and the warmest temperatures in the past 100,000 years (black line is temperature). Since the Holocene Warm period, the ITCZ and the earth’s global temperatures have been declining, associated with reduced inflows of tropical water into the Arctic. These changes were primarily due to changes in the orbital cycles. However, due to shifts in atmospheric and ocean circulation from natural oscillations, there is still great variability in ITCZ’s location. A closer look at ITCZ variability over the past 2000 years (graphic C) helps us understand today’s warming trend. When the ITCZ shifted northward, the world entered the Medieval Warm Period with the warmest temperatures in 2000 years. Then as the ITCZ migrated southward and became located further south than at anytime during the last 10,000 years, we entered the Little Ice Age with growing glaciers and sea ice. But about 150 years ago, before CO2 ppm had any influence, the ITCZ began migrating northward (highlighted by red circle), warm ocean currents were increasingly migrating into the Arctic, and the world began to warm. Climitards and CO2 alarmists ignore this science, science that is published in numerous peer-reviewed papers. The globalists would rather blame CO2 to get political control. They can’t control the ITCZ. The Climitards ignore this science because they are just ignorant!